One of the modality testcases crashes the jvm. The crash is reproducable from 6u2 b06 with Windows XP, but couldn't reproduce the crash with 6u1. The crash is reproducable rarely - once in five times. Attached is a testcase which can reproduce the crash

A crash log:

#
# An unexpected error has been detected by Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d1db893, pid=628, tid=2728
#
# Java VM: Java HotSpot(TM) Client VM (1.6.0_03-b02 mixed mode, sharing)
# Problematic frame:
# C [awt.dll+0x12b893]
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x02f04400): JavaThread "AWT-EventQueue-0" [_thread_in_native, id=2728]

siginfo: ExceptionCode=0xc0000005, reading address 0x000000ec

Registers:
EAX=0x00000000, EBX=0x02eb8338, ECX=0x00000000, EDX=0x7c90eb94
ESP=0x031cf674, EBP=0x02f192b8, ESI=0x00000000, EDI=0x02eb8334
EIP=0x6d1db893, EFLAGS=0x00010246

Top of Stack: (sp=0x031cf674)
0x031cf674: 02f044ec 6d1b3563 02eb8338 6d236904
0x031cf684: 031cf708 2b29cb08 000001f7 02f192b8
0x031cf694: 031cf6bc 6d945c45 00010002 6d236770
0x031cf6a4: 02eb8338 00000001 00000200 00000000
0x031cf6b4: 00130017 5fe7143b 00000017 00000013
0x031cf6c4: 6d1d7c2c 02eb8008 02eb8334 6d236904
0x031cf6d4: 031cf6fc 6d1ee978 00000000 6d1b37aa
0x031cf6e4: 6d1b3330 02eb8008 02f04400 2aa48e78

Instructions: (pc=0x6d1db893)
0x6d1db883: ff 52 5c 5e 5b 5f 5d c3 cc cc cc cc cc 56 8b f1
0x6d1db893: 8b 86 ec 00 00 00 85 c0 74 23 8b 0d bc c9 22 6d


Stack: [0x03180000,0x031d0000), sp=0x031cf674, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [awt.dll+0x12b893]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j sun.awt.windows.WComponentPeer.nativeHandleEvent(Ljava/awt/AWTEvent;)V+0
j sun.awt.windows.WComponentPeer.handleEvent(Ljava/awt/AWTEvent;)V+113
j java.awt.Component.dispatchEventImpl(Ljava/awt/AWTEvent;)V+849
j java.awt.Component.dispatchEvent(Ljava/awt/AWTEvent;)V+2
j java.awt.EventQueue.dispatchEvent(Ljava/awt/AWTEvent;)V+46
j java.awt.EventDispatchThread.pumpOneEventForFilters(I)Z+156
j java.awt.EventDispatchThread.pumpEventsForFilter(ILjava/awt/Conditional;Ljava/awt/EventFilter;)V+30
j java.awt.EventDispatchThread.pumpEventsForHierarchy(ILjava/awt/Conditional;Ljava/awt/Component;)V+11
j java.awt.EventDispatchThread.pumpEvents(ILjava/awt/Conditional;)V+4
j java.awt.EventDispatchThread.pumpEvents(Ljava/awt/Conditional;)V+3
j java.awt.EventDispatchThread.run()V+9
v ~StubRoutines::call_stub

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
=>0x02f04400 JavaThread "AWT-EventQueue-0" [_thread_in_native, id=2728]
  0x02f01400 JavaThread "AWT-Shutdown" [_thread_blocked, id=2040]
  0x02f30400 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=4060]
  0x02a5dc00 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=2976]
  0x02a59000 JavaThread "CompilerThread0" daemon [_thread_blocked, id=3436]
  0x02a57c00 JavaThread "Attach Listener" daemon [_thread_blocked, id=1820]
  0x02a57000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=3724]
  0x02a52400 JavaThread "Finalizer" daemon [_thread_blocked, id=2932]
  0x02a4dc00 JavaThread "Reference Handler" daemon [_thread_blocked, id=1176]
  0x00296000 JavaThread "main" [_thread_blocked, id=3504]

Other Threads:
  0x02a4cc00 VMThread [id=2692]
  0x02a78800 WatcherThread [id=2032]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation total 960K, used 347K [0x22990000, 0x22a90000, 0x22e70000)
  eden space 896K, 38% used [0x22990000, 0x229e5ad0, 0x22a70000)
  from space 64K, 6% used [0x22a80000, 0x22a81160, 0x22a90000)
  to space 64K, 0% used [0x22a70000, 0x22a70000, 0x22a80000)
 tenured generation total 4096K, used 3720K [0x22e70000, 0x23270000, 0x26990000)
   the space 4096K, 90% used [0x22e70000, 0x232121c0, 0x23212200, 0x23270000)
 compacting perm gen total 12288K, used 587K [0x26990000, 0x27590000, 0x2a990000)
   the space 12288K, 4% used [0x26990000, 0x26a22dc8, 0x26a22e00, 0x27590000)
    ro space 8192K, 66% used [0x2a990000, 0x2aedf128, 0x2aedf200, 0x2b190000)
    rw space 12288K, 52% used [0x2b190000, 0x2b7ded60, 0x2b7dee00, 0x2bd90000)

Dynamic libraries:
0x00400000 - 0x00423000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\bin\java.EXE
0x7c900000 - 0x7c9b0000 C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c8f5000 C:\WINDOWS\system32\kernel32.dll
0x77dd0000 - 0x77e6b000 C:\WINDOWS\system32\ADVAPI32.dll
0x77e70000 - 0x77f01000 C:\WINDOWS\system32\RPCRT4.dll
0x7c340000 - 0x7c396000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\msvcr71.dll
0x6d870000 - 0x6daba000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\client\jvm.dll
0x7e410000 - 0x7e4a0000 C:\WINDOWS\system32\USER32.dll
0x77f10000 - 0x77f57000 C:\WINDOWS\system32\GDI32.dll
0x76b40000 - 0x76b6d000 C:\WINDOWS\system32\WINMM.dll
0x76390000 - 0x763ad000 C:\WINDOWS\system32\IMM32.DLL
0x6d3c0000 - 0x6d3c8000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\hpi.dll
0x76bf0000 - 0x76bfb000 C:\WINDOWS\system32\PSAPI.DLL
0x6d820000 - 0x6d82c000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\verify.dll
0x6d460000 - 0x6d47f000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\java.dll
0x6d860000 - 0x6d86f000 z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\zip.dll
0x6d0b0000 - 0x6d273000 Z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\awt.dll
0x73000000 - 0x73026000 C:\WINDOWS\system32\WINSPOOL.DRV
0x77c10000 - 0x77c68000 C:\WINDOWS\system32\msvcrt.dll
0x774e0000 - 0x7761d000 C:\WINDOWS\system32\ole32.dll
0x5ad70000 - 0x5ada8000 C:\WINDOWS\system32\uxtheme.dll
0x73760000 - 0x737a9000 C:\WINDOWS\system32\ddraw.dll
0x73bc0000 - 0x73bc6000 C:\WINDOWS\system32\DCIMAN32.dll
0x74720000 - 0x7476b000 C:\WINDOWS\system32\MSCTF.dll
0x10000000 - 0x1000f000 C:\Program Files\RealVNC\WinVNC\VNCHooks.dll
0x755c0000 - 0x755ee000 C:\WINDOWS\system32\msctfime.ime
0x6d360000 - 0x6d3b3000 Z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\fontmanager.dll
0x77120000 - 0x771ac000 C:\WINDOWS\system32\OLEAUT32.DLL
0x6d2a0000 - 0x6d2cf000 Z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\cmm.dll
0x6d500000 - 0x6d524000 Z:\disk13\jcg\FATS\builds\1.6.0_03\b02\binaries\windows-i586\jre\bin\jpeg.dll

VM Arguments:
jvm_args: -DHANGINGJAVA3164 -DresultsDir=Z:/disk11/awt/girish/DTF3.1/DTWS/results//6_UR_int_jfc-awt_windows-en-2007-09-10-19-12-55-0876/admin.Windows_XP.x86/ToolkitModal_copy_1/
java_command: Test5
Launcher Type: SUN_STANDARD

Environment Variables:
CLASSPATH=Z:/disk11/awt/girish/DTF3.1/DTWS/results//6_UR_int_jfc-awt_windows-en-2007-09-10-19-12-55-0876/admin.Windows_XP.x86/ToolkitModal_copy_1;;Z:/disk11/DTF3.1/DTWS/suites/6_UR_int_jfc/awt/share/lib/AWT_Modality/classes
PATH=C:/PROGRA~1/MKSTOO~1/mksnt;
USERNAME=admin
SHELL=C:/PROGRA~1/MKSTOO~1/mksnt/ksh.exe
DISPLAY=:0.0
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 8 Stepping 6, GenuineIntel



--------------- S Y S T E M ---------------

OS: Windows XP Build 2600 Service Pack 2

CPU:total 1 (1 cores per cpu, 1 threads per core) family 6 model 8 stepping 6, cmov, cx8, fxsr, mmx, sse

Memory: 4k page, physical 523432k(153340k free), swap 1280300k(912432k free)

vm_info: Java HotSpot(TM) Client VM (1.6.0_03-b02) for windows-x86, built on Sep 6 2007 02:51:14 by "java_re" with unknown MS VC++:1310